hgview #117624 hgview is not longer usable standalone [validation pending]

dropping sys.path manipulation dropped the ability to use hgview without extra installation process.

User roar

prioritynormal
typebug
done in1.8.0
load0.500
load left0.000
closed by#cf93defad8a8 [launcher] load hgviewlib manually if standalone (closes #117624)
patch[launcher] find hgviewlib automatically (closes #117624) [applied]